Dynamic multi-star star chart simulator based on digital micromirror device (DMD) and simulation method thereof

A simulator and star map technology, applied in the space field, can solve the problems of unsatisfactory dynamic image performance, expensive star simulator, poor star display accuracy, etc., to achieve improved total light efficiency, stable picture quality, and excellent uniformity. Effect
CN102175262AInactive Publication Date: 2011-09-07HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2011-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a dynamic multi-star star chart simulator based on a digital micromirror device (DMD) and a simulation method thereof. The simulator consists of a data processing unit, a DMD driving and processing unit, a DMD unit, a camera lens unit and a color wheel unit; the data processing unit is connected with the DMD driving and processing unit and the color wheel unit respectively; the DMD driving and processing unit is connected with the DMD unit; and the DMD unit is connected with the camera lens unit and the color wheel unit respectively. The simulation method is divided into an open loop mode and a closed loop mode; the open loop mode comprises optical testing, circuit testing and algorithm testing of a star sensor; and the closed loop mode comprises system algorithm testing and task running. By adopting an all-digital reflective projection technology, a grey level of an image is improved, the image noise disappears, the picture quality is stable, and the digital image is very precise.
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Description

(1) Technical field

[0001] The invention relates to space technology, specifically a DMD-based dynamic multi-star map simulator and a simulation method thereof. (2) Background technology

[0002] The multi-star simulator (dynamic multi-star simulation) simulates the infinite parallel light image of a certain field of view. Combined with multi-star simulation software, it is mainly used to detect whether the functional indicators such as star sensor imaging, star map recognition, star tracking, and attitude calculation are normal. It can simulate the relative magnitude and angular distance between stars in space to form a star map for detection. The equipped software can have dynamic closed-loop function, which is used for semi-physical simulation test of the system and closed-loop processing of star installation. The main task of the star simulator is to establish the simulated star radiation source used in the ground calibration of the star sensor and the system joint test...

Claims

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